Question 107916
Remember parallel lines have equal slopes. So this means the equations a) {{{y=-4x+1}}} and d) {{{y=-4x+5}}} have equal slopes of -4. So these two lines are parallel


So the answer is D)



Notice if we graph {{{y=-4x+1}}} and {{{y=-4x+5}}}, we get


{{{ graph( 500, 500, -10, 10, -10, 10, -4x+1,-4x+5) }}} 


and we can see that the two lines are parallel. So our answer is verified