Answer:
7x + 5 -15x -23 +5y
= -8x-18+5y
Step-by-step explanation:
Answer:
Gradient = Change in y / Change in x
Gradient = (-7-3) / (0-4)
Gradient = -10/-4
Gradient = 2.5
So the answer is 10/4, which is 2.5
Answer:

Step-by-step explanation:
For one line to be perpendicular to another, their slopes must multiply to -1. So, we really want the line with slope
that passes through the point
.
Recall the point-slope form of a line. If you have a point
and a slope
, the line through that point with the given slope is
. Plugging in our given point and slope gives our line:
(point-slope form).
We can convert this line to slope-intercept form, the most common form by expanding the right side and adding
to get
by itself:


Answer:
D
Step-by-step explanation:
Given
- 3 ÷ - 
Leave the first number, change division to multiplication and turn the fraction upside down, that is
= - 3 × - 
= 
= 
= 7
→ D
Answer:
Picture 1:
12x+1=109
12x=108
x=9
Picture 2:
2x-3=57
2x=60
x=30
Let me know if this helps!