3 years ago

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

Mathematics

1 answer:

svlad2 [7]3 years ago

3 0

Answer:

y = 2x + 2

Step-by-step explanation:

<em>(a) Slope </em>

The point-slope formula for a straight line is

y₂ - y₁ = m(x₂ - x₁)

The line goes through the points (-1, 0) and (0, 2).

2 – 0 = m[0 – (-1)]

2 = m

(b) y-intercept

y = mx + b

Use the point (0, 2)

2 = 2× 0+ b

2 = 0 + b

b = 2

∴ y = 2x + 2

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