Four less than the difference between a number and seven is seven Use the Algebraic equation and solve for the x
(Use x for the variable )
* I really need help I don’t understand it

x=8

Step-by-step explanation:

Four less than the difference between a number and seven is seven

let's go by parts

Four less

that means if we have a number we subtract 4

so we can write

the difference between a number and seven   remember this is

let's say x is "a number"

so we can rewrite it as

the difference between x and seven

and that means

so we have

put all together and we have

and the final part

is seven

this means that the equation upward is equal to seven

=7

so we have our equation

so there it is our number is 8

y=mx+

step-by-step explanation:

we are given a graph for system of inequalities.

in order to write the system of inequalities for the given graph, we need to find the inequality for each of the line separately.

let us find the slope of dotted line first.

taking two coordinates on the graph.

let us say (0,0) and (3,1).

let us find the slope of the line now.

slope of the dotted line would be =.

y-intercept of dotted line is y=0 only.

plugging slope m= and b=0 in slope-intercept form y=mx+b, we get

.

the line is shaded up of that dotted line.

therefore, for shading up we would take greater than inequality symbol > .

and because it's a dotted line we would take only > symbol in place of = sign in above equation of line.

therefore, inequality for dotted line would be

let us take two points (3,1) and (0,4) on the solid line.

slope of the solid line would be =.

for the solid line we have y-intercept b= 4.

plugging slope m= -1 and b=4 in slope-intercept form y=mx+b, we get

y = -1x + 4.

the line is shaded down of that solid line.

therefore, for shading down we would take less than inequality symbol < .

and because it's a solid line we would take ≤ symbol in place of = sign in above equation of line.

therefore, inequality for solid line would be