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Find the equation of a line which cuts the x-axis at a distance of 3 units to the left of the origin andhas a slope equal to -2?
Kal Jyoti Shiningsta...
y = mx + b
m = slope
y = -2x+b
when y = 0, x = -3
0 = -2(-3)+b
b = 6
y = -2x +6
Marcus Rivera
Roxane Bode
5
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How is an equation equal?
An equation is equal if you have a math problem on each side of an equal sign.
How do you find the equation of a circle?
A circle is the locus of all points equidistant from a fixed point on the plane. The fixed point is called the centre of the circle and the equal distance is called the radius of the circle. We can derive the equation of the circle from the distance formula. Let O be the centre of the circle and r be the radius of the circle. Here the centre = Origin = (0, 0) and the radius = r units. The distance r = sqrt ((x-0)2 + (y-0)2) r = sqrt (x2 + y2) Squaring both the sides, we get x2 + y2 = r2 This is the equation of the circle with centre as Origin. If the centre point is some (h, k), then use the distance formula to find the radius r. The distance r = sqrt ((x-h)2 + (y-k)2) Squaring both sides, we get (x-h)2 + (y-k)2 = r2. This is the equation of the circle with centre as the point (h, k).
What is an equation called that doesn't have an equal sign?
If it doesn't have an equal sign, then it's not an equation.
When two sides of an equation are equal what phrase is used?
Equality. If they are ALWAYS equal then the equation is an identity.
Difference between expression and equation?
An expression has no equal sign whereas an equation does have an equal sign
What adjacent sides are not equal has 2 pairs of congruent sides andhas 4 right angles?
A rectangle
What is the definition of An proposed answer to a problem is called if it can possibly be within a small distance of the actual answer?
Reasonable solution or Reasonable answer
What is the nature of the displacement time graphof a body moving with constant acceleration?
The equation which covers this is s = ut + at2/2 where s is distance (ie displacement), u is initial velocity, t is time and a is the acceleration. This is a parabola with an initial (t=0) slope equal to u. The above equation comes from simple integration of the velocity versus time equation v=u+at, using an origin for distance s=0 at t=0.
How does one find out if an equation's graph goes through the origin?
-- Take the equation -- Set either 'x' or 'y' equal to zero -- Solve the resulting equation for the remaining variable -- If the remaining variable is then also zero, then the origin is on the graph of the function If the graph is a straight line ('x' and 'y' appear in the equation only to the 1st power), then the equation has to be in the form of a simple ratio ... like (y = Kx) or (x = Ky) or (xy = K) or (x/y = K) ... in order to go through the origin.
How is an equation equal?
An equation is equal if you have a math problem on each side of an equal sign.
How do you find the equation of a circle?
A circle is the locus of all points equidistant from a fixed point on the plane. The fixed point is called the centre of the circle and the equal distance is called the radius of the circle. We can derive the equation of the circle from the distance formula. Let O be the centre of the circle and r be the radius of the circle. Here the centre = Origin = (0, 0) and the radius = r units. The distance r = sqrt ((x-0)2 + (y-0)2) r = sqrt (x2 + y2) Squaring both the sides, we get x2 + y2 = r2 This is the equation of the circle with centre as Origin. If the centre point is some (h, k), then use the distance formula to find the radius r. The distance r = sqrt ((x-h)2 + (y-k)2) Squaring both sides, we get (x-h)2 + (y-k)2 = r2. This is the equation of the circle with centre as the point (h, k).
What would the graph for the equation y2x look like?
If y is equal to 2x, the graph would be a straight line going through the origin. The line would go up and to the right, and the angle at the origin has a tangent equal to 2. This angle is between 63 and 64 degrees.
When does an equation not equal to each other?
Never. By definition, the two sides of an equation are equal.
What is an equation called that doesn't have an equal sign?
If it doesn't have an equal sign, then it's not an equation.
* a mathematical sentence containing an equal sign?
An equation
Why are Rf values always less than 1?
Rf values are distance of substance from origin divided by distance of solvent front from origin. As the substance travels with the solvent, the solvent will always have a greater or equal value to the distance travelled by substance. This means the highest value of Rf is 1.
When two sides of an equation are equal what phrase is used?
Equality. If they are ALWAYS equal then the equation is an identity.
