Question 828703
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a=1/2b+4
a-4b=-17
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put the system of linear equations into standard form:
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x = a 
y = b
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x - 0.5y = 4
x - 4y = -17
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copy and paste the above linear system in standard form into this matrix-method solver:
https://sooeet.com/math/system-of-linear-equations-solver.php
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solution:
x = a  = 7
y = b = 6
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graph:
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x - 0.5y = 4
x - 4y = -17
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x - 4 = 0.5y
x + 17 = 4y
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2x - 8 = y
0.25x + 4.25 = y
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{{{ graph( 300, 300, -2, 8, -2, 8, 2x - 8, 0.25x + 4.25) }}}
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Solve and graph linear equations:
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Solve quadratic equations, quadratic formula:
https://sooeet.com/math/quadratic-formula-solver.php
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Solve systems of linear equations up to 6-equations 6-variables:
https://sooeet.com/math/system-of-linear-equations-solver.php