Step-by-step explanation:
-4(-10x² - 8x + 7)
= 40x² + 32x -28
No 6.98x11.12 does not equal 776.176. it equals 77.6176
Answer:
Step-by-step explanation:
Use the slope-intercept form to find the slope and y-intercept
Any line can be graphed using two points.
Select two values, and plug them into the equation to find the corresponding
values.
Graph the line using the slope and the y-intercept, or the points.
A (-1,2)
using substitution:
substitute-2x for y in the second function
7x - 8(-2x) = -23
solve for x
7x + 16x = -23
23x = -23
x = -1
plug x = -1 into a function to find y, in this case ill plug it into the first
y = -2(-1)
y = 2
since x = -1 and y = 2
the answer is A (-1,2)
