Explanation:
The method of solving "by substitution" works by solving one of the equations (you choose which one) for one of the variables (you choose which one), and then plugging this back into the other equation, "substituting" for the chosen variable and solving for the other. Then you back-solve for the first variable.
Answer:
x < 3
Step-by-step explanation:
4x - 7 < 5
Add 7 to both sides;
4x < 12
Divide both sides by 4;
x < 3
<h3>
Answer: g = -2</h3>
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Explanation:
We will use the slope formula
m = (y2-y1)/(x2-x1)
Plugging in the given items leads to
-5 = (g-8)/(6-4)
Now solve for g
-5 = (g-8)/(6-4)
-5 = (g-8)/2
-5*2 = g-8
-10 = g-8
-10+8 = g
-2 = g
g = -2
We have (6,g) turn into (6,-2)
The two points (4,8) and (6,-2) are on a line of slope -5.
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As a way to check, we'll find the slope of the line through (4,8) and (6,-2)
m = (y2-y1)/(x2-x1)
m = (-2-8)/(6-4)
m = -10/2
m = -5
The answer is confirmed.
Answer:
9-5x
Step-by-step explanation:
You distribute to get 6+3-5x and then you combine the 6 and the 3 to get 9
Answer:
y divided by x
Step-by-step explanation:
z times by y ( do it in calculator
