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Sagot :
Answer:
a = 8
b ≠ 18
Step-by-step explanation:
y = 4x - 7
2y = ax + b
For there to be no solution, the lines (if graphed) should be parallel meaning that their slopes are equal but the y-intercepts are different
y = mx +b is the equation of a line where m is the slope and b is the y-intercept
Multiply the first equation by 2
2y = 8x - 14
2y = ax + b
So a has to equal 8
b can be anything except 14 (otherwise the lines would be the same)
9514 1404 393
Answer:
- a = 8
- b ≠ -14
Step-by-step explanation:
Multiply the first equation by 2 and you get ...
2y = 8x -14
Compare to the second equation ...
2y = ax +b
The pair of equations will have no solution if they describe parallel lines. That is, a = 8 and b ≠ -14.
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For a ≠ 8, the lines will intersect and there will be one solution.
For a = 8 and b = -14, the lines will be coincident, and there will be infinite solutions.
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