Answer:
y = 3/7x + 51
Step-by-step explanation:
y = 3/7x + 11 is parallel to the line so it means that both of their gradient are same so:
y = mx + c
m= gradient point = (-21 , 42)
= 3/7
now we sub the m and the point into the formula which is y= mx+c because we should find the c first then we can find the equation of the line:
42 = 3/7 (-21) + c
42 = -9 + c
42 + 9 = c
51 = c
c = 51
now you hv to rewrite again the equation become y= 3/7x + 51
So now your final answer is : y = 3/7x +51
Answer:
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Step-by-step explanation:
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Answer:
D
Step-by-step explanation:
Since both equations express y in terms of x, equate the right sides
- 2x + 11 = - 3x + 21 ( add 3x to both sides )
x + 11 = 21 ( subtract 11 from both sides )
x = 10
substitute x = 10 into either of the 2 equations for y
y = - 2x + 11 = - 20 + 11 = - 9
solution is (10, - 9) → D
Answer:
9
Step-by-step explanation:
the line hits the y-axis at the point (0, 9) where x=0 meaning this point is the y-intercept being 9
