Question

Write a linear function with a slope of 4 that includes the point (-1, 3).

Answer 1

y=4x+1

First write into point slope form: y - y1 =m (x - x1)

y - 3 = 4 (x - (-1) )

Then distribute the 4

y - 3 = 4x + 4

Move the three across the equation

y = 4x + 1

Answer 2

y = 4x + 7

Explanation:

y = mx + b

m = slope = 4

y = 4x + b

Now substitute the x- and y-coordinates of the given point into the equation and solve for b.

3 = 4(-1) + b

3 = -4 + b

b = 7

The equation is:

y = 4x + 7