Gradient = 2
Gradient = -2 y-intercept = -4
-6
x equals 4
If x=4 then 2x+7 =
Gradient to the curve at any point is the derivative of y = x2 So the gradient is d/dx of x2 = 2x. When x = 2, 2x = 4 so the gradient of the tangent at x = 2 is 4.
2x - 3y = 5 => 3y = 2x - 5 has a gradient of 2/3 9y + bx = 4 => 9y = -bx + 4 has a gradient of -b/9 The two gradiends must be the same if the two lines are parallel: 2/3 = -b/9 so that b = -6
3x+56 = 2x+4 3x-2x = 4-56 x = -52
Do you need this equation factored or? 2x+3=x+4?
x=-4
8
parallel
2x-4