Plz help does the point (-1, -1) lie on the line y= 4x + 3 ?

yes, it does

Step-by-step explanation:

point (-1, -1)

if (-1, -1) lies on this line, it will make below equation correct:

Answer is yes

Yes it does.

Step-by-step explanation:

For (-1, -1) to lie on the line y= 4x + 3 ; that would mean substituting x=-1 into the expression we should be able to get y=-1 so let's test that.

Substituting x=-1 in y= 4x + 3;

we have : y= 4(-1)+ 3 = -4 +3 = -1;

Since y=-1 tallies with the point (-1, -1)

i don't know

step-by-step explanation:

step by step resolutions

1) n+n+1+n+2=51

3n+3=51

3n=48

n=16

the three numbers are 16, 17 and 18.

2) x+15=4x

3x=15

x=5

radha is now 5 years old

3) the two digits are x and y.

y=3x

(10x+y)+(10y+x)=88

y=3x

11x+11y=88

y=3x

x+y=8

x+3x=8

x=2

the original number can be either 28 or 82.

4) n+(n+2)+(n+4)=48

3n+6=48

3n=42

n=14

the numbers are 14, 16 and 18.

5) y=x+3

10y+x+10x+y=143

y=x+3

11x+11y=143

y=x+3

x+y=13

x+x+3=13

2x=10

x=5

the original number can be 57 or 75.

hope this !