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Vikentia [17]
3 years ago
12

Solve this system by using substituion 6x+5y=-13 y=-7×+9

Mathematics
2 answers:
Mumz [18]3 years ago
8 0

Answer:

Alright well to find the x-intercept, substitute in 0 for y and solve for x. To find the y-intercept substitute in 0 for x and solve for y

X-intercept: (9/13, 0)

Y-intercept: (0, 1/2) Hope this helps :)

Step-by-step explanation:


aliya0001 [1]3 years ago
3 0
6x + 5y=-13
y=-7x+9

6x + 5(-7x +9) =-13
6x -35x + 45 = -13
-29x + 45 = -13
-45. -45
-29x = -58
/-29
x = 2

y = -7x + 9
y = -7(2) + 9
y = -14 + 9
y = -5
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grandymaker [24]

Answer:

Lines a and b are parallel

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Step-by-step explanation:

we know that

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Part 1) Find the slope of Line a

we have the points

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m=\frac{6-4}{3+3}

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Part 2) Find the slope of Line b

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substitute in the formula

m=\frac{3+3}{-8+10}

m=\frac{6}{2}

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Part 3) Find the slope of Line c

we have the points

(0,5) and (3,-4)

substitute in the formula

m=\frac{-4-5}{3-0}

m=\frac{-9}{3}

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Part 4) Find the slope of Line d

we have the points

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substitute in the formula

m=\frac{-4+7}{13-4}

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If two lines are parallel then their slopes are the same

If two lines are perpendicular then their slopes are opposite reciprocal

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m_a=\frac{1}{3}

m_b=3

m_c=-3

m_d=\frac{1}{3}

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Lines a and b are parallel (slopes are equal)

Lines a and c are perpendicular (slopes are opposite reciprocal)

Lines d and c are perpendicular (slopes are opposite reciprocal)

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Step-by-step explanation:

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