Answer:
y = 2x
Step-by-step explanation:
Formula is y = mx + b
m is slope
slope = (4 - -2) / (2 - -1) = 6 / 3 = 2
Now equation is y = 2x + b
To find b, substitute one of the coordinates in the equation. Let's use (2,4)
y = 2x + b
4 = 2(2) + b
b = 0
So equation is y = 2x
Answer:
Step-by-step explanation:
Let x represent the total number of stdents that has all grades in the school.
There are three grades in the school. One grade has 1/3 of the students, this means that number of students that belongs tho this grade is 1/3 × x = x/3
One grade has 1/4 of the students, this means that number of students that belongs to this grade is 1/4 × x = x/4
Total number of students in both grades would be x/3 +/x/4 = 7x/12
The number of students in the remaining grade would be
x - 7x/12 = 5x/12
fraction of students in the remaining grade would be
(5x/12)/x = 5/12
Answer: 2a^5+5b
Step-by-step explanation:
This is actually pretty simple
The exponent with the same power can be subtracted so
4a^5-2a^5 is 2a^5 like 4x-2x which is equal to 2x
4b+b is equal to 5b
2a^5+5b is your answer
Answer: 1/5
Step-by-step explanation:
B, y goes up 8, when you add 8 to y
