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Is y equals 4 a function?
Yes, the function y=4 will be a straight horizontal line, passing through the point y=4.
What is the value of x and y in this equation 5 x plus 8 y equals 3 and negative 4 x - 4 y equals negative 1?
x = -1/3 and y = 7/12
Is y equals x-4 a function?
Yes.
Is y equals 2x plus 4 a function?
Yes.
Is y equals 3x-1 a function?
4
Is y equals 4 a function?
Yes, the function y=4 will be a straight horizontal line, passing through the point y=4.
What is the value of x and y in this equation 5 x plus 8 y equals 3 and negative 4 x - 4 y equals negative 1?
x = -1/3 and y = 7/12
Is this equation a function -x plus y equals -4?
Yes it is a function. In standard form it is y=x-4.
Is y equals x-4 a function?
Yes.
What does x equal in y equals x squared plus 4?
y equals x plus 4 when y equals 0 then x equals 2i i is the square root of negative 1
What is the function rule of y equals 2x if x equals 1 2 3 and 4?
y = 2, 4, 6, 8
Is x plus y equals 4 a function?
Yes.
Is y equals 2x plus 4 a function?
Yes.
Is y equals 3x-1 a function?
4
Is x equals the square root of y-4 a function?
The square root operation is not a function because for each value of y there can be 2 values of x - the principal square root and its negative. This can only be rectified by limiting the range of the opearation to the principal or positive square root. Furthermore, it also depends on the domain of the function. If y<4 then the square root is not defined within Real numbers. So, for y ≥ 4, x = +sqrt(y-4) is a function.
What order pairs to equation x minus 2x equals negative 4 and equation 2x minus y equals 1?
x = 4 and y = 7
Is the cosine function an odd function?
No. Cosine, along with sec, is an even function. The odd functions are sin, tan, csc, and cot. The reason for this is because is you take the opposite of the y-value for the cosine function, the overall value of the function is not affected.Take, for example, cos(60 degrees), which equals POSITIVE 1/2.If you flip it over the x-axis, making the y's negative, it becomes cos(-60 degrees), or cos(300 degrees). This equals POSITIVE 1/2.Now let's look at an odd function. For example, sin(30 degrees) equals POSITIVE 1/2. Now take the opposite of this.sin(-30 degrees), or sin(330 degrees), equals NEGATIVE 1/2. This is because it is found in the fourth quadrant, where the y's are negative. Sine of theta, by definition, is y divided by r. If y is negative, sine is negative.
