If y varies directly as x, and y is 18 when x is 5, which expression can be used in
the value of y when x is ul?
y=13 (11)
ya (1919
o y= 18365
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Abit confused about what you mean, but i think you might be referring to slope intercept form: y = mx + bin that case b, or the y intercept is already given.(0,-1)find the slope by using the formulay2 - y1/x2 - x1the final slope will be 4/2, equivalent to 2.now your equation should look like thisy = 4/2x -1sorry if this didn’t you out!