2x+3=4 3x+y=6 solve by graphing
2 answers:
Answer:
(0.5, 4.5)
Step-by-step explanation:
The easiest-to-graph form is the slope-intercept form. Convert all equations to that form
3x + y = 6
y = -3x + 6 (move 3x)
To graph this, get the y-intercept, just take the b value of the equation (6)
The slope is -3, which is also the coefficient of x. So each time you move 1 over in the x-axis, the y axis drops by 3.
2x + 3 = 4 (this is a vertical line)
2x = 1
x = 1/2
To graph this, just draw a vertical line where x is 1/2
After graphing both equations, the point where the 2 lines intersect is the solution.
Graphs by Desmos linked attatched
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Answer:
b) $120 , $ 80
Step-by-step explanation:
Ratio = 3 :2
Total = 3 + 2 = 5
3/5 of 200 =
= 3 * 40
= $ 120
2/5 of 200 =
= 2 * 40
= $ 80