Question

A line has a slope of 1/4 and passes through point (0.4, -1/2)What is the value of the y-intercept?

0.6
-0.4
0.275
0.525

Answer 1

-0.6

Explanation:

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Answer 2

The y intercept is - .6

Explanation:

We can use the slope intercept form of a line

y = mx+b

where m is the slope and b is the y intercept

y = 1/4x +b

Substitute the point into the equation

-1/2 = 1/4 (.4) +b

-1/2 = .1 +b

Subtract .1 from each side

-.5 - .1 = .1 + b - .1

-.6 =b

The y intercept is - .6