Question

What is the equation of the line with an x-intercept of -1 and a y-intercept of 2?

y = - 2 x + 2
y = 2 x - 2
y = 2 x + 2

Answer 1

y = 2x + 2

Explanation:

The general form

is;

y = mx + b

where m is the slope and b is the y-intercept

so we have;

y = mx + 2

To get m, substitute the point (-1,0)

So we have

0 = -m + 2

m = 2

So the equation is;

y = 2x + 2