If you want to shift the graph of y=4x+7 down which equation could you use

Y= 4x+6 because the 6 is the y-intercept. the smaller the y-intercept the lower the linear function will go 

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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!