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Drupady [299]
2 years ago
9

Help me out please!!!!!!

Mathematics
2 answers:
rusak2 [61]2 years ago
7 0

Step-by-step explanation:

We need 2 things in order to write slope-intercept equations: the slope, and the y-intercept. Remember that the form is y=mx+b, where m is slope and b is y-intercept. All of the lines show the y-intercept, but not the slope. We can calculate slope using two points on the line and the slope equation, m=\frac{y2-y1}{x2-x1}.

1.  Two points: (1,-3) and (0,4)

m=\frac{4-(-3)}{0-1}=\frac{7}{-1}=-7

So the equation would be: y=-7x+4

2. Points: (-1,-2) and (0,1)

m=\frac{1-(-2)}{0-(-1)}=\frac{3}{1}=3

Equation: y=3x+1

3. Points: (0,5) and (-2,4)

m=\frac{4-5}{-2-0}=\frac{-1}{-2} =\frac{1}{2}

Equation: y=\frac{1}{2}x+5

4. Points: (0,-2) and (-4,1)

m=\frac{1-(-2)}{-4-0}=\frac{3}{-4}=-\frac{3}{4}

Equation: y=-\frac{3}{4}x-2

Hope this helps!

Tresset [83]2 years ago
4 0
1) 4
2) 1
3) 5
4) -2

I think that is right, I’m not 100%
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