Answer:
x = -1, y = 1
Step-by-step explanation:
Multiply the top equation by 2:
Leaving the bottom equation unchanged, add the two resulting equations to eliminate y, obtaining:
Solve this for x, and then substitute this value of x into the bottom equation. Finally, solve for y.
Can yu post the problem? my computer won't open the document
The perpendicular line will have an equation of y=3/4x-3/4
To find this, we first have to solve our equation for slope intercept form.
8x + 6y = -5 ----> subtract 8x
6y = -8x + -5 ----> divide by 6
y = -4/3x - 5/6.
So we know the slope of this equation to be -4/3. Since perpendicular lines have opposite and reciprocal slopes, we know we can simply flip the fraction and make it a negative to get the new slope of 3/4. Since B is the only option with that slope, we know it to be the correct answer.
Answer: 56 old houses
Step-by-step explanation:
21/3=7
there are 7, 3 new houses.
so 7(8)=56