Y varies directly with x and y = 21 when x = 7.
2 answers:
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Answer:
B
Step-by-step explanation:
One way to tell is to put both equations into slope-intercept form. That form is usually written where <em>m</em> is the slope and <em>b</em> is the y-intercept.
Solve the first equation for y.
The slope of this line is -3, and its y-intercept is 5/2.
Solve the second equation for y.
The slope of this line is -3 and its y-intercept is 2.
The lines are parallel because they have the same slope and <u>different</u> y-intercepts. There is no solution to the system.