y - y₁ = m(x - x₁)
y - (-4) = -5[x - (-3)]
y + 4 = -5(x + 3)
y + 4 = -5(x) - 5(3)
y + 4 = -5x - 15
- 4 - 4
y = -5x -19
<h3>
7.</h3><h3>
The required equation of the line is y= 2x-5</h3><h3>
8.</h3><h3>
y=30</h3>
Step-by-step explanation:
Given , a line passes through the points (1,-3) and (3,1)
The equation of line which passes through the points and is
Here and
The required equation of the line is
8.
Given, y varies directly with x and y=24 when x=8
Therefore,
.........(1)
y = 24 when x=8
Equation (1) becomes
y= 3x
So, when x=10
y=3×10
⇒y=30
X= 23 im pretty sure hope this helps best of luck :)
A. (24-3)/8 (I'm not 100% sure this answer is correct because I cant remember what an inequality is)
B. You should buy three packages because it would be better to have some left over than to not have enough (I know this answer is correct)
30=5(x+1)
30÷5=6
6=x+1
6-1=5
x=5