# math

A line crosses the y-axis at (0,4) and has a slope of -2. Find an equation for the this line.
A) y = 2x + 4
B) y = -2x + 4
C) y = -2x - 4
D) y = -4x + 2 <--

6)Write the equation of the line with the given slope and y-intercept.

slope = 5
y-intercept = 8
A) y = 5x + 8
B) x = 5y + 8 <--
C) y = 8x + 5
D) x = 8y + 5

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1. neither is correct.
Y=slope*x + yintercept

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bobpursley
2. slope of -2. !!!!!!!!!!
THAT means m = -2
in y = m x + b
y = -2 x + b

moreover you are told that when x = 0, y = +4

The second one is correct

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3. sorry, you have x and y reversed in the second one.

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4. @bobpursley thanks.
@Damon so the 2nd one is B, and for the first one its B. -2x + 4

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5. no wait is 2x+4.

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6. first one y = -2x + 4 which is B
m = -2
b = 4

second one
y = 5 x + 8
which is A

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